Signaling system.



H. 0. HUGH SIGNALING SYSTEM. APPLICATION FILED APPLE. 1916.

1,21 9,666, Patented Mar. 20, 1917.

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SIGNALING SYSTEM.

APPLICATION men mus, I916.

Patented Mar. 20, 1917.

2 SHEETS-SHEET 2.

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HARRY O. RUGH, OF CHICAGO, ILLINOIS, ASSIGNOR TO RAILWAY ELECTRIC MANU- FACTURING COMPANY, OF CHICAGO, ILLINOIS.

SIGNALING SYSTEM.

Specification of Letters Patent.

Patented Mar. 20, 1917.

Original application filed March 23, 1914, Serial No. 826,775. Divided and this application filed April 8, 1916. Serial No. 89,772.

To all whom 2'25 may concern:

Be it known that I, HARRY 0. HUGE, a citizen of the United States, residin at Chicago, in the countywof Cook and tate of Illinois, have invented a certain new and useful Improvement in Signaling Systems, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. 1

My invention relates to signalingsystems and is particularly available for use along railway lines although of course not so limite A form in which my invention has found great use, for instance, is in its application to a train despatching system or other conducting system along a right of way when it may be desired to effect certain circuit changes from a central station. More specifically, my invention when so applied, has been used to connect a loud talking transmitter to the conducting system or train dQS". patching system so that the operator at the central station may hear for instance when a train is passing a certain point. This is a very desirable condition to provide for when it is desired by the train despatcher for in stance to ascertain whether the train is passing a station where there, may be no night operator, or whether a freight train is having difficulty negotiating a heavy grade, finding it necessary to split up the train and take it over the grade in sections. Under such conditions the train despatcher wants to be advised just how soon the track is clear. between stations.

I will describe a form which my invention may take more particularly by referring to the accompanying drawings, in which Figure 1 is a front view of a circuit con trollmg devlce constructed in accordance with my invention;

Fig. 2 is an end view thereof;

Fig. 3 is a view similar tolFig. 1 showing the device in an alternate position;

These grades most usually occur invention of course not being limited to this particular relay device, but this particular relay device lending itself admirably for the purpose of my invention. I am describing this relay device in detail so that its action in connection with the system may be the more readily understood.

Referring more particularly to Figs. 1, 2 and 3 I provide a base plate 1 having suitable legs 2 by means of which the device may be suitably fastened to a wall or to a containing box. A terminal plate 3 is provided to carry the connecting screws 4 by means of which circuit connection with the various parts of the device is effected. A bracket 5.carries on its upper flat plate 6 the heelplate 7 of a relay 8. This relay has an armature 9 pivotally mounted .to the heel plate carrying a spring: 10 by means of which through the agency of the adjusting screw 11 the armature is retained in its retracted. position of Fig. 1. A limit screw in the form of the adjustable screw 12 confines the rearward movement of the armaity of the horizontal portion 6 of the bracket 5. A spring 17 secured. to the arm 16 tends to move said arm against the limit stop 18 mounted upon the heel plate 7. The arm 16 and limit stop 18 are desirably-of nonmagnetic material. An adjusting screw 19 controls the tension of the spring 17 The arm 16 is confined in its contra-clockwise movement by the adjusting screw 20. The arm 16 also carries a finger 21 slightly resilient but fixedly mounted on said arm 16. The arm 16 also has a projecting pin 22 for purposes presently to appear. A detent 23 is carried by the spring 24, which spring in turn is fixedly secured to the arm 25. The arm 16 is designed to be moved from the position of Fig. 1 to the position of F ig. 2 when the magnet 8 is momentarily energized. At that time the detent 23 falls in front of the cam-shaped surface of the arm 16 and holds the arm 16 against the stop 20 as shown in Fig. 2. The relay 8, of course, may be deenergized as its continued energization is not necessary to hold the arm 16 in its moved position. In this position of the arm 16 however it will be noted that the right hand extremity of the finger has been raised, thus raising the arm 15 so that the next energization of the relay 8 will cause this arm 15 to press against the detent 23, thereby moving it away from its locking position on top of the arm 16 and permitting the arm 16 in answer to the spring 17 to assume the position of Fig. 1. This is also the result of only a momentary energization of the relay 8 as the armature 9 may be retracted, and it will then fall again into the position shown in Fig. 1.

It will thus be seen that the first energization of the relay 8 moves the arm 16 into one position and a second energization permits it to move into its alternative position, and so 011. Each energization of the relay 8 however effects circuit closure between the elements 13 and 14, which continues during the energization of the relay. The arm 16 is provided with two contact springs 26 and 27 respectively which are fixedly mounted upon an insulating plate 28 carried by this arm. These springs 26 and 27 are adapted to close contact with springs 29 and 30 whenever the arm 16 ccelement 34 may be provided at any point along the right of way which is adapted to close circuit between the arm 35 and the compact spring 36 whenever the proper number of impulses or the proper code has been transmitted over the line circuit by means of the calling mechanism here diagrammatically shown as the key 37. The relay 38 and the slow acting relay 39 in a well known manner control the element 34 to actuate it in response to impulses so that the circuit between the elements 35 and 36 is closed only as the proper code is received.

It is assumed that this stepby-step element is placed at some point along the right of way, say a heavy grade where it may be desirable for the train despatcher to know whether the trains are experiencing any difficulty in negotiating the grade. To this end a loud talking transmitter 40 is mounted somewhere near the tracks, and this transmitter through the agency of the primary winding 41 and battery 42 may transmit by way of the secondary winding 43 the sounds through the line wires 32 and 33 so that they can be heard in the train despatchers receiver 44. The train despatcher of course desires to connect this transmitter 40 to the line circuit at certain times to disconnect it therefrom, but of course does not wish to maintain an operated condition of the step-by-step device or the relay 8 because that would tie up his line. It is for this reason that my device is of special benefit because he can set up the connection of the transmitter to the line wires, and then restore all of the operating apparatus to normal so that his line is clear for other calls or for other business, the line however being in a position to transmit the.

sounds of an approaching or passing train to his receiver 44 through the agency of the transmitter 40.

Thus whenever the step-by-step device is actuated to close contact between the elements 35 and 36, then the relay 8 is enercupies the position. of Fig. 2. The springs gized to move, through the agency of its 29 and 30 are mounted upon an insulating bracket 31 fixedly secured to the base plate 1. The pin 22 confines the left hand extremity of the arm 15 when the relay is moving the arm 16 from the position shown in Fig. 1 to the position shown in Fig. 2. This is desirable because during this movement the finger 21 is being slightly bent so that when the relay is deenergized and the armature 9 retracted, it assumes its normal arm 15 into the posiarmature 9, the springs 26 and 27 into their circuit closing position with the springs 29 1 and 30. The step-by-step device may then i be returned tonormal and the relay armaure 9 may be returned to normal, but the ,ircuit between the element 26 and 29 and he lements 27 and 30 is maintained in a ,losed position; v This establishes a circuit rem the transmitter 40 through the battery 2, contact spring 29, contact spring 26, prinary winding 41, to the receiver 40, and lso establishes a circuit from the line wire 2 through the conductor 45, condenser 46, secondary winding 43, contact spring 27, contact spring 30, conductor 47, to the line wire 33. Thus any noises along the right f way are transmitted through the agency a of the transmitter 40 to the receiver 41.

The lines 32 and 33 however and selective apparatus connected therewith, as, likewise the relay 8, are in their normal unoperated unenergized condition. Now whenever the tain despatcher is through with his investigation and desires .to disconnect the transmitter 40, all he needs to do is to again send the code or signal to eilect circuit closure between the elements 35 and 36, whereupon the relay 8 is again energized to open the circuit between the elements 26 and 29 and the elements 27 and 30 respectively.

I have further provided mechanism where by the train despatcher may be aware of the proper operation of the elements. this end the armature 9 cooperates with a contact 1% so-that a circuit closure between the elements 9 and 14 is efiected during the periods of energization of the relay 8. This serves to connect a buzzer 48 in shunt of the transmitter so that when the elements 26 and 29 are also in engagement the buzzer 48 is operated through the agency of a battery 42, thus energizing a primary winding ll and sending impulses over the line wires through the agency of the secondary wind -ing 43 to thereby apprise the train despatcher that the connection has been established finally between the elements 26 and Of course, when the relay 8 is, deenergized the contact at 14 is broken.

Now whenever the train despatcher intends to restore the elements 26 and 27 to normal, the same circuit is initially established at 14 to send the signal, but this immediately ceases when the contact 26 and 29 is broken, thus advising him of a restoration of the connecting elements to normal. Of course, it can beso arranged that the train despatcher gets no signal when disestablishing the system by merely arranging that the springs 26 and 29 shall have their circuit broken prior to the establishment of I the contact between elements 9 and 14.

In Fig. 5 I show a further application of my invention as it may be applied to a station where there is no night operator. A switch 49 is provided to connect the battery '50 through the contacts 35 and 36 to the normal day signal 51, but at night when the operator leaves he reverses this switch to connect the battery 50 and contacts 35 and 36 to the terminals of the relay 8. This relay 8 is then used through the agency of the springs 26 and 27 and springs 29 and 30 to establish connection between the lamp 52 and the source of supply, here shown as a lighting generator 53. The train despatcher can thus at night time illuminate the platform when trains are arriving or departing.

From what has been stated the nature of my invention will be entirely clear to those skilled in the art. It will also be readily apparent that what is described here for illustrative purposes is not intended to limit the broader nature 01"" the invention. Having however thus described certain forms in which my invention may be carried out, what I claim as new and desire to secure by Letters Patent is:

1. In a system of the character described the combination with a line circuit, of a receiver associated with said circuit, a trans mitter remote from said receiver adapted for desired association with said circuit, and remotely controlled means for associating said transmitter with said circuit, said means including a magnet having means upon successive energizations to alternately effect association and disassociation of said transmitter with said circuit.

2. In a system of the character described the combination with a circuit, telephonic receiving mechanism at one point thereof, and remotely controlled means for associating telephonic transmitting mechanism with said circuit remote from said receiving mechanism, said means including a magnet adapted during successive energization to alternately associate and disassociate said transmitting mechanism with said circuit.

3. In a system of the character described the combination with a line circuit, a local circuit, and means for associating said local circuit with said line circuit, said means including a magnet adapted during successive energizations to alternately associate and disassociate said local circuit and said line circuit.

4:. In a system of the character described the combination with a line circuit, a local circuit, means for associating said local circuit with said line circuit, said means including a magnet adapted during successive energizations to alternately associate and disassociate said local circuit and said line circuit, and controlling apparatus remote from said means to control said means.

5. In a system of the character described the combination with a line circuit, a local circuit, means for associating said local cir-' cuit with said line circuit, said means including a magnet adapted during successive energizations to alternately associate and disassociate said local circuit and said line circuit, and controlling apparatus associated with said line circuit remote from said means to control said means.

6. In a system of the character described the combination with a line circuit, a local circuit, means for associating said local circuit with said line circuit, said means ineluding a magnet adapted during successive energizations to alternately associate and disassociate said local circuit and said line circuit, and answer back mechanism controlled by said magnet.

7. In a system of the character described the combination with a line circuit, a local eluding a magnet adapted during successive circuit, means for associating said local cir- In Witness whereof, I hereunto subscribe cult with said line circuit, said means 1n- 1ny name this 6th day of April, A. D., 1916.

HARRY O. HUGH. Witnesses MAX W. ZABEL, HAZEL A. JONES.

energizations to alternately associate and disassociate said local circuit and said line circuit, and answer back mechanism controlled by said magnet and said local circuit.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

